TW200937045A - Anti-glare film, anti-glare polarizer and apparatus for displaying image - Google Patents

Abstract

The present invention provides an anti-glare film with excellent anti-glare function by using polyethylene terephthalate film that is extraordinary in its mechanical strength and cost. The anti-glare film according to this invention was disposed upon polyethylene terephthalate film with an anti-glare layer having fine concavo-convex shape upon its surface, wherein the following formula (1) is satisfied when the overall haze and transmissive definition of the anti-glare film were represented by H % and Tc %, respectively. Tc ≤ 8H. . . (1)

Description

200937045 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to antiglare of a polyethylene terephthalate film which is excellent in mechanical strength and cost on a film. A film and an anti-glare polarizing plate and an image display device using the anti-glare film. [Prior Art] An image display device such as a liquid crystal display, an electro-polymer display panel, a Braun tube (cathode ray tube: CRT) display, or an organic electroluminescence (EL) display, when external light is reflected on the display surface thereof, The visibility is significantly reduced. In the past, in order to prevent such external light from being reflected in televisions and personal computers that emphasize image quality, cameras and digital cameras that use external light, and mobile phones that use reflected light to display them, The surface of the anamorphic display device is provided with a film layer that prevents external light from being reflected. The technique used for the film layer generally includes a non-reflective φ treatment technique using an interference effect of an optical multilayer film, and an anti-glare treatment technique in which incident light is scattered by the formation of fine irregularities on the surface to dilute the image. In particular, the latter technique for scattering incident light by forming fine concavities is widely used in applications such as large monitors and personal computers because it can be manufactured at a relatively low price. Conventionally, an anti-glare film which is applied to such an anti-glare treatment technique is produced, for example, by a method in which a resin solution in which a filler (fiUer) is dispersed is applied onto a substrate sheet, and is adjusted. The coating film thickness exposes the filler to the surface of the coating film, whereby irregularities of irregularities are formed on the substrate sheet. However, such an anti-glare which is produced by dispersing a filler is difficult to obtain the unevenness of the original plan because the arrangement and shape of the unevenness 320894 3 200937045 are affected by the dispersion state and the coating state of the filler in the resin solution. The anti-glare film having a low haze has a problem that sufficient anti-glare properties cannot be obtained. Further, when such a conventional anti-glare film is disposed on the surface of the image display device, there is a problem that the entire surface is whitened due to scattered light, and the color is unclear, which is likely to cause whitening. On the other hand, there is also an attempt to exhibit anti-glare properties only by the fine concavities and convexities formed on the surface of the transparent resin layer. For example, the anti-glare film disclosed in Japanese Laid-Open Patent Publication No. 2002-189106 (Patent Document 1, Patent Application No. 1 to 6, paragraphs 0043 to 0046) is formed by sandwiching an ionizing radiation curable resin. The ionizing radiation curable resin is cured in a state between the mold and the transparent resin film to form a three-dimensional mean point average roughness, and an average distance between adjacent convex portions on the two-dimensional roughness basis is satisfied. The fine unevenness of the predetermined value is used to laminate the cured layer of the ionizing radiation-curable resin layer having the surface unevenness on the transparent resin film. On the other hand, the embossing of the different types of the anti-glare film is disclosed in Japanese Laid-Open Patent Publication No. Hei. Imprint method, etc. In the image display device, the liquid crystal display is used as a thin display surface such as a liquid crystal television, a liquid crystal monitor, or a personal computer, and the application is expanded. The expansion of the LCD TV market is particularly significant, and the requirements for low cost are also very strong. In the case of a polarizing plate for a liquid crystal television, a cellulose triacetate film (TAC film) is laminated on both sides of a polarizing film composed of a polyethylene resin film by a water-based adhesive, and From 4 320894 200937045 • Adhesives are placed on one side of the polarizing plate. In this case, the TAC film which is the polarizing plate on the outermost side of the viewing side of the liquid crystal display device is often subjected to surface treatment in order to impart functionality, and is mostly used in liquid crystal televisions. Anti-glare film. In the retardation film laminated on the polarizing plate, a stretched product of a polycarbonate resin film and an extended processed product of a cycloolefin resin film are used, and when used for a liquid crystal television, a phase difference from a high temperature is used. A retardation film composed of a ring-dough hydrocarbon resin film having a very small unevenness.贴 For the purpose of improving the productivity and reducing the cost of the product, the laminate of the polarizing plate and the retardation film composed of the stretched olefin resin film has been attempted to reduce the number of components and to simplify the process. Japanese Laid-Open Patent Publication No. Hei 08-043812 (Patent Document 2, specifically, 'The reference embodiment discloses that a TAC film is laminated on one side of a polarizing film, and a TAC film is laminated on the opposite side to have a phase difference function. A cycloolefin (norbornene) resin film. In the use of large-screen image display devices, for example, in the case of wall-mounted televisions, the demand for further thinning and lighter image display devices is increasing. In this case, the anti-glare film, the anti-glare polarizing plate using the anti-glare film, and other components may have the following problems: (1) In response to the thin and large surface of the image display device, It is necessary to reinforce the strength of the panel. (2) In order to reduce the thickness of the image display device, the member to be used must be thinned. (3) In the liquid crystal display device, the gap between the liquid crystal panel and the back backlight system 320894 200937045 becomes narrow. It is necessary to prevent the circular unevenness caused by the contact between the liquid crystal panel and the backlight system and the Newton ring. [Explanation] (Problems to be solved by the invention) For example, an extended polyethylene terephthalate film having excellent performance on the mechanical strength and cost side of the film can be considered as a base film of the anti-glare film. However, the extended polyethylene terephthalate is extended. When a film is placed on an image display device such as a liquid crystal display device to view an image, the color unevenness (also referred to as interference unevenness and rainbow unevenness) is observed when viewed from an oblique direction due to the influence of the phase difference. The present invention has been made in view of the above-mentioned status quo, and an object of the present invention is to provide a polyethylene terephthalate film excellent in mechanical strength and cost on a film to provide excellent protection. An antiglare film having an antiglare property and an antiglare polarizing plate and an image display device using the same. (Means for Solving the Problem) In order to solve the above problems, the inventors of the present invention have made the following research after dedication It has been found that a polyethylene terephthalate film having excellent performance on the mechanical strength and cost side of the film is used as a base film of the anti-glare film, and as long as the anti-glare film is satisfied An anti-glare layer having a specific relationship between the degree H% and the penetration sharpness Tc% is formed on the polyethylene terephthalate film, and the formed anti-glare film is thin but still has sufficient mechanical strength. The anti-glare film of the present invention is formed on the polyethylene terephthalate film to form an anti-glare layer having a fine uneven shape on the surface of the image display device; When the anti-glare film 6 320894 200937045 has a full haze of Η% and a penetration sharpness of Tc%, the following relationship (1) is satisfied:

TcS8H ····〇) • In the anti-glare film of the present invention, it is preferred that the full haze η% and the penetration sharpness Tc% of the anti-glare film satisfy the following relationship (2):

Tc^ 5H (2) More preferably, the following relationship (3) is satisfied: ❺ Tc ^ 3H (3) b is a polyethylene terephthalate used in the antiglare film of the present invention. _ Axial extended polyethylene terephthalate film or biaxially oriented polyethylene terephthalate film, and preferably 'having a thickness of 20//111 to l〇〇#m. The partial fog is preferably such that the full haze of the antiglare film of the present invention is due to surface haze and internal enthalpy. Further, the surface haze system is 5% to 15%, and the internal haze is 5% to 40%. Further, in the anti-glare film of the present invention, it is preferable that ❹ is incident from the side of the anti-glare layer. Corner 30. The reflectance R (3 〇) of the reflection angle at the time of incidence is 〇 〇 5% ^ Ο fi / · -. 0 ′ reflection angle 40. The reflectance r(4〇) system 〇. 0〇〇1% to 〇. 〇〇5%; reflection angle 50. The reflectance is 5 〇) 〇〇〇〇 1% to 〇 〇〇〇 5%. The anti-glare film of the present invention may have a low reflection enthalpy on the surface of the fine concavo-convex shape of the anti-glare layer. Further, according to the present invention, there is provided an anti-glare polarizing plate which is obtained by laminating any one of the above-mentioned anti-glare film and a polarizing film; the polarizing film is disposed on the opposite side of the anti-glare film from the surface on which the anti-glare layer is formed. Side of the side. The anti-glare film or the anti-glare polarizing plate of the present invention can be combined with an image display element such as a liquid crystal display element or a plasma display panel of 7 320894 200937045 to constitute an imaging display device. That is, according to the present invention, there is provided an image display device comprising any one of the above-described anti-glare film or the anti-glare polarizing plate and the image display element; and the anti-glare film or the anti-glare polarizing plate is used for the anti-glare The layer side is disposed on the side of the image display element. (Effects of the Invention) The anti-glare film of the present invention exhibits excellent anti-glare performance while reducing color unevenness, and prevents deterioration of visibility due to whitening. The antiglare polarizing plate in which the antiglare film of the present invention and the polarizing film (polarizer) are combined also exhibits the same effect. Further, the image display device in which the anti-glare film or the anti-glare polarizing plate of the present invention is disposed has high anti-glare performance and excellent visibility, and can also reinforce the strength of the panel to prevent the panel from being warped. song. Further, the color unevenness when viewed from the oblique direction due to the phase difference of the polyethylene terephthalate film is improved. [Embodiment] The anti-glare film of the present invention has a structure in which an anti-glare layer having a fine uneven shape on its surface is formed on polyethylene terephthalate. Fig. 1 (a) and (b) are schematic cross-sectional views showing a preferred embodiment of the antiglare film of the present invention. The anti-glare film 103a shown in Fig. 1(a) is provided with a polyethylene terephthalate film 101a and an anti-glare laminated on the surface of the polyethylene terephthalate film 101a and having fine irregularities on its surface. Layer 102a. A filler 104a which is useful for forming a surface uneven shape is dispersed in the antiglare layer. The anti-glare film 103b shown in Fig. 1(b) is provided with a polyethylene terephthalate film 101b and laminated on the surface of polyethylene terephthalate film 8 320894 200937045 ethylene glycol film 101b and having a fine surface. An anti-glare layer 102b having an uneven shape. The antiglare layers 1〇2a and 1〇2b are hardened by hardening, and are therefore referred to as hard coatings. As shown in Fig. 1(a), the anti-glare film of the present invention can be formed into a surface uneven shape by a filler dispersed in the anti-glare layer, or as shown in Fig. 1(b), not in the anti-glare layer. The filler is dispersed, and the surface uneven shape is formed, for example, by an imprint method or the like. Further, in the first drawings (a) and (8), the antiglare layer is formed only on one side of the polyethylene terephthalate film, but the present invention is not limited to this only. The anti-glare layer is formed on the surface, and the anti-glare layer is formed on both sides of the polyethylene terephthalate film. Hereinafter, the polyethylene terephthalate film and the antiglare layer will be described in detail, but in principle, the antiglare layer is formed on the surface of the polyethylene terephthalate S medium. Description. Into the polyethylene terephthalate film> The antiglare layer of the present invention has an antiglare layer having a fine uneven shape laminated on one side or both sides of the polyethylene terephthalate film. Production. =, the polyethylene terephthalate film preferably extends through one axis or two extensions (=, also has such a pair of axially extending or biaxially extending poly(p-branched ethylene) film It is simply described as a factory-extending polyethylene terephthalate film, polyethylene terephthalate film, which is excellent in mechanical properties, solvent resistance, scratch resistance, cost, etc. The anti-glare film using such a poly-p-ethylene formate film has excellent mechanical strength and is capable of reducing the thickness. Thus, in the present invention, polyethylene terephthalate is formed.聚的聚32〇894 9 200937045 terephthalic acid ethylene glycol means that more than 80 mole percent of the repeating unit is a resin composed of polyethylene terephthalate, and may also contain The constituent unit of the other copolymerization component. Examples of other copolymerization components include isophthalic acid, p-hydroxyethoxybenzoic acid, 4,4'-dicarboxydiphenyl, 4, 4'- Dicarboxydibenzophenone, bis(4-carboxyphenol)ethane, adipic acid, sebacic acid, 5-sulfonate sodium metabiphenylate, 1,4- a dicarboxylic acid component such as carboxycyclohexane; propylene glycol, butanediol, neopentyl glycol, diethylene glycol, cyclohexanediol, ethylene oxide adduct of bisphenol A, polyethylene glycol, poly a diol component such as propylene glycol or polytetramethylene glycol. The dicarboxylic acid component and the diol component may be used in combination of two or more kinds as needed. Further, a hydroxycarboxylic acid such as p-hydroxybenzoic acid may be used. The dicarboxylic acid component and the diol component are used in combination together. For other copolymerization components, a dicarboxylic acid component containing a small amount of a guanamine bond, an amine ester bond, an ether bond, a carbonate bond, or the like may be used. Or a diol component. That is, in the present invention, even in the case of containing other copolymerized components of this type, it is described as polyethylene terephthalate. In the method for producing an ester, a so-called direct polymerization method in which terephthalic acid and ethylene glycol (and, if necessary, other dicarboxylic acids and/or other diols) are directly reacted, and p-benzoquinone can be used. Dimethyl esters of acid and ethylene glycol (and, if desired, other diesters of dicarboxylic acids and/or The diol) is an arbitrary production method, such as a transesterification reaction method which performs a transesterification reaction. Moreover, polyethylene terephthalate may contain a well-known additive as needed. The well-known additive is mentioned. For example, lubricants, anti-caking agents, heat stabilizers, oxidation inhibitors, charge inhibitors, light stabilizers, impact resistance improvers, etc., but as a base film for anti-glare film, must be 10 320894 200937045 - cookware (4)黯 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 添加 添加 添加 添加 添加 添加 添加 添加 添加 添加 添加 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小 最小The second method is not particularly limited to the following method, that is, the melting pressure m of the raw material resin is raised at a temperature equal to or higher than the glass transition temperature, and the device is stretched by a tenter (tend= = non-alignment film laterally, and then heat-fixed) Treatment of 1 axis-extending poly(p-diacetate) is carried out in the form of a plate, and after the longitudinal extension of the non-alignment film of the resin: melting, above the glass transition temperature, the thermosetting is performed. : Pull r ❹ 8〇?ί?3!Γ^ to 6 times, _ 3==12!"' The stretching ratio is 2.5 times dicarboxylic acid. If the stretching ratio is low, the poly(p-phenylene) film may not exhibit sufficient transparency. In addition, in order to reduce the strain amount of the alignment main shaft, the temperature of the relaxation treatment is 9 to 2 〇〇ΐ, which is 180. The relaxation rate differs depending on the extension conditions, and the heat shrinkage rate of the polyparaphenylene oxime after the slow treatment is set to 2% or less. The heat treatment temperature of 320 11 11 200937045 can be set to 180 art to 25 (rc, preferably ° 〇 to 245 ° C. In the heat fixation process, preferably, first, a fixed length, a heat After the fixed treatment, the strain amount of the main vehicle is lowered, and the strength of the homing is increased, and the width direction relaxation treatment is further performed. This = thermal retardation, preferably adjusted to make the polyphenylene benzoate after the relaxation treatment The heat shrinkage rate of the film of bismuth citrate = 1% to 10% at 150 ° C, and the ratio of the bismuth of the vinegar to the vinegar is 2% to 5%, which is used in the present invention. The maximum value of the strain amount of the alignment main shaft of the extended polyethylene terephthalate shovel is 1 degree or less, preferably 8 times or less, more preferably 5 degrees or less. "If the maximum value of the strain amount of the alignment main shaft is larger than the yield, When the film is attached to the liquid crystal display, the coloring failure tends to be heavy. In addition, the "maximum amount of the strain of the alignment 2 axis" of the extended poly(ethylene dicarboxylate) film can be utilized, for example, by the company. The company's phase difference film inspection device RETS system is used for measurement.

The thickness of the extended polyethylene terephthalate film is preferably set to 20 / / m to 10 〇 Am, more preferably set to 30 / zm to 5 〇 / / m. If the thickness of the film is too long (Ipet is less than 20 #m, there is a tendency to be difficult to handle, and if the right thickness dpET exceeds 1 〇〇〆m, the effect of thinning thickness is deteriorated. Further, the in-plane phase difference Rpet of the extended polyethylene terephthalate film is preferably l 〇〇〇 nm or more, more preferably 3 〇〇〇 nm or more. When Rpet is less than 10 nm, there is a tendency to be particularly conspicuous from the front coloring. In addition, the in-plane phase difference of the extended polyethylene terephthalate film is expressed by the following formula (4).

RpET=(na-nb)xdpET (4) In the in-plane retardation axis direction of the 'na-type extended poly(p-ethylenedicarbonate) film 320894 12 200937045 Refractive index 'nb-system in-plane orientation The refractive index with respect to the positive direction of the in-plane retardation axis direction. It is also possible to impart haze to the extended poly(p-dibenzoic acid). In the aspect of imparting haze, 丝 斯特 (4), for example, a method in which inorganic fine particles or organic fine particles are mixed into the above-mentioned raw material resin. As for the inorganic fine particles f, the representative ones include carbonic acid mother, barium sulfate, titanium oxide, gas, Huaming-oxidized stone, broken glass, talc, mica, white carbon, oxidized town, zinc oxide, etc. And the surface treatment of the above inorganic particles with a fatty acid or the like. Further, in terms of organic fine particles, trimeric amine particles (refractive index of 1.57), polymethyl endogenous methyl ketone particles (refractive index of 149), mercapto methacrylate/phenethyl acrylate copolymer resin particles can be used ( Resin _ to 1.59), polycarbonate particles (refractive index 155), polyethoxylate particles (refractive index: 1.53), polyvinyl chloride particles (refractive index 146), and resin particles such as lyophile particles (refractive index: 1.46). - Various easy-to-handle treatments may be applied to the side or both sides of the extended polyethylene terephthalate (tetra). The subsequent treatment is not particularly limited, and conventionally known treatments can be used, for example, corona treatment (c〇r warm treatment), plasma treatment, flame treatment, primer treatment (W) treatment, solvent treatment, and the like. The above description illustrates the use of a transaxially stretched or two-stretched polyethylene terephthalate film as the base film of the anti-glare film, but it is also possible to use an extended poly-naphthalene-ethyl acetate film instead of the warp. The extended polyethylene terephthalate' can also achieve the same effect as described above. <anti-glare layer and full haze / penetration clarity> 320894 13 200937045

From the viewpoint of suppressing color unevenness, 'the anti-glare film of the present invention is not specifically limited to 0, and the lower limit of the fresh moon is particularly limited', but the haze Η% and the penetration sharpness tc% of the liquid crystal display device are compared. Jia is better than the above relationship (3). .kal_ cflrl *4^

It is known that the period of the surface uneven shape can be increased. Here, the total haze H% of the anti-glare film was measured by the following method. That is, an anti-glare layer having fine irregularities is formed on polyethylene terephthalate (four) which is a base film, and the anti-glare film is formed by using the surface on which the anti-glare layer is not formed as a joint surface. The glass substrate was bonded with a transparent adhesive, and the full haze was measured in accordance with JIS K 7136. Further, the penetration sharpness Tc% of the anti-glare film of the present invention is measured by the following method, that is, the film having a fine uneven shape is formed on the polyethylene terephthalate film which is a substrate film. In the glare layer, the surface of the one in which the anti-glare layer is not formed is used as a bonding surface, and the anti-glare film and the glass substrate are bonded together with a transparent adhesive. The measurement is performed by a method specified in JIS K 7105. In this specification, in the case of the optical comb used for the measurement of the sharpness, the width of the dark portion and the bright portion is 320894 14 200937045, and the width is defined as 〇.125mm, 0.5mm, l.Orom. And 2 · Omm four. The anti-glare film defined by the present invention is referred to as the penetration sharpness by the sum of the sharpness measured by using the above-mentioned four „7 纟 _ _. The penetration sharpness under the ambiguity. The maximum value is 400%. Fig. 2 is a view showing unevenness of color when an anti-glare film which is a substrate-axially extending polyethylene terephthalate film as a substrate is disposed on an image display device. The degree of the relationship between the full haze of the anti-glare film and the penetration sharpness Tc%. It can be seen from the f2 diagram that the full haze of the anti-glare film and the penetration sharpness Tc% are not satisfied (1) At the time (that is, a region where the upper side is larger than the straight line Te=8H), a serious color unevenness is observed. It is further understood that it is preferable to satisfy the relationship (2) in order to appropriately suppress the color unevenness. More preferably, the relationship (3) is satisfied (that is, a region lower than the straight line Tc=3H (Tcg3H)). The color unevenness is evaluated by the following procedure. First, a commercially available liquid crystal is used. TV ("LC-32GH3" by SHARP Co., Ltd.) peels off the polarizing plate on the lunar side and the display side instead of the original polarized light. In the polarizing plate r suMIKALAN SRD341E manufactured by Sumitomo Chemical Co., Ltd., the adhesive axis is attached to the back side by the adhesive in such a manner that the absorption axis coincides with the absorption axis of the original polarizing plate. TAC film "FUJITAC" manufactured by Co., Ltd., polyvinyl alcohol-based polarizer (polarizing film), and anti-glare film forming various full haze H% and penetration sharpness Tc% (relative to the comparative example of the present invention) The polarizing plate is bonded to the display surface side by an adhesive so that the absorption axis coincides with the absorption axis of the original polarizing plate. Then, the liquid crystal television obtained in the above manner is turned on in the dark room, and the degree of color unevenness is visually observed from the front direction and the oblique direction in the white display state. The evaluation is based on the following. The standard is plotted in Figure 2. The average of the three observers). The process of color unevenness was evaluated from 1 to ς from c. The five stages of Wang Hao, and the evaluation was carried out. 2 · Color unevenness was hardly observed. 3 : Clearly observed uneven color. 5: Observation 1 : No color unevenness was observed at all. Judah observed uneven color. 4 : There is a serious color unevenness. Meet the above optical characteristics and the like

In the production method, there is no anti-glare layer method in which the right side surface has fine irregularities. For example, it can be exemplified that the dispersion can be formed by using a conventionally known square to form an irregularity 2 = the material is exposed on the surface of the coating group, whereby the embossing method and the loading sheet 3 are disclosed, and aG £ J n 3 is In any of the above methods, the above relationship (10) can be achieved by making the surface micro-forms (1) to (3) into (4). The period of the fine concavo-convex shape of the surface at this time, the average length PSm of the example H line is · m to ΐ〇Μ

^ Generally speaking, by increasing the particle size of the filler, reducing the filler content, and increasing the thickness of the antiglare layer, the period of the fine concavo-convex shape can be increased. In the fine concavo-convex shape on the surface of the anti-glare layer of the hair (4), the arithmetic mean height of the profile curve of the concavo-convex shape is from 〇 〇 5 to the maximum profile height pt 〇 2_ to (10). When the arithmetic mean twist Pt is less than 0.05 &quot; m, the anti-glare film does not exhibit sufficient anti-glare properties. When the arithmetic mean height pa exceeds 〇 _ 3 m, the surface haze of the film (4) becomes large, and self-chemicalization occurs when used in the stencil display device, which tends to lower the visibility. Maximum cut surface height 16 320894 200937045 - When the anti-glare film is made in the same way, it is not good at the same time. Further, the maximum cross-sectional height pt exceeds 2 _ 2 rr, and the haze becomes large. When used in an image display device, whitening occurs and the visibility is impaired. A material: == When a resin solution in which a filler is dispersed is coated on a polyethylene terephthalate film which is a film of a resin substrate, as a method for producing such an anti-glare layer, (4) ❹ = that is, There are also special restrictions 'use of conventional particles can be used. For example, just, ...g. Listed are carbonated dance, barium sulfate, oxidized chlorine oxide, sulphur dioxide, glass, talc, mica, white carbon, sub-surface treatment, === Examples of the inorganic particles include trimeric decylamine particles (refractive index L57), dipropylene particles (refractive index L49), f-based propyl-fg|/ ❹ particles (refractive index: .50 to h59), and polycarbonate particles. Body = Polyethylene particles (refracted κ53λ, polychlorinated (tetra) particles (_2=, resin particles (refractive index: 46)), etc. ·) Here, in order to satisfy the full haze H% and penetration of the present invention In the above-mentioned relationship, it is preferable to use a dioxygen monthly = sub-hole (porous f-dioxotomy, agglomerated dioxo-cut, spherical di-oxidation / etc.) resin particles in the above-mentioned filler. When the material is formed, the weight average particle diameter system is _, and the layer is filled with the light-transmitting resin ΠΚ. The weight portion is from i part by weight to 10 parts by weight (iv) and is contained in the anti-glare layer. In the dry circumference 320894 17 200937045 When the weight average particle diameter is below or below, there is a tendency to prevent glare. When the weight average particle 'is there or not _ the full surface haze will become larger, if the body wants #^ or more, The tendency of the table is low. In addition: when the fruit oxygen and the two-party glare film will be whitened, and there is a discrepancy in the field of spectroscopy, the oxidized dreams of the granules, or the amount of days or less, may not be sufficient. When the dioxin = surface unevenness is changed to 10% by weight, the surface haze becomes large, and the super glare film becomes whitened and the visibility is lowered. In addition, 'anti- and anti-proof! can be suitable for tuning to obtain the necessary surface haze. The degree of the second is preferably relative to the weight * average particle diameter is above the iron = _ or above. When the thickness of the anti-glare layer If the weight of the particles is less than the weight of the particles, the surface haze will become larger. As a result, the anti-glare = the tendency to reduce the visibility. On the other hand, the view of the surface haze = see, at this time The upper limit of the thickness of the glare layer is not particularly limited. However, if it is too thick, it is liable to be broken, and the hardening shrinkage of the antiglare layer tends to cause curling and curling, which tends to lower productivity. Therefore, it is preferably 2 μm or less. When the ruthenium is used as a filler (transparency/, sub-particle) for forming an anti-glare layer, the weight average particle diameter is 2//m to 10#m, and preferably granulation for light transmission. The resin (10) is contained in an anti-glare layer in an amount of from i part by weight to 40 parts by weight of the component. When the weight average particle diameter is less than 2, there is a tendency to exhibit sufficient anti-glare property, and when the weight average particle exceeds 1〇, ', method, the surface haze will become larger, as a result, the anti-glare film will be whitened and visual In addition, when the amount of the resin particles added is less than one part, "there is no sufficient anti-glare property, and the surface unevenness and the amount of IL have a tendency to decrease, and the amount of the resin particles is more than 40. In the case of parts by weight, the full haze (the total of the surface haze and the internal haze) becomes large, and in the case of the image display device, the kneading surface is darkened and the visibility is lowered. Further, although the thickness of the anti-glare layer can be suitably adjusted to obtain the necessary surface haze, it is generally preferred that the average particle diameter is 85% or more, more preferably 100, with respect to the weight average particle diameter. % or more. When the thickness of the anti-glare layer is less than 85% of the weight average particle diameter of the particles, the surface haze θ becomes large, and as a result, the anti-glare film is whitened and the visibility is lowered. The other side Φ, the upper limit of the thickness of the layer is not particularly limited in view of the surface haze, but if it is too thick, it is easily broken, and the hardening shrinkage of the antiglare layer causes the film to curl. a tendency to reduce productivity, etc., so it is preferably 20; czm In the resin in which the above-mentioned filler is dispersed, an ultraviolet curable resin, a thermosetting resin, an electron beam curable resin, or the like can be used, but from the viewpoints of productivity, hardness, etc., it is preferred to use an ultraviolet curable resin. For the ultraviolet ray curable resin, a commercially available product can be used. For example, a polyfunctional acrylic acid vinegar such as trimethylol propyl acrylate, triacetic acid vinegar or pentaerythritol tetraacrylate vinegar can be used alone or A mixture of two or more types of photopolymerization initiators such as "IRGACURE 907", "irgacure 184" (found as Ciba Specialty Chemicals), and "LUCIRIN ΤΡ0" (manufactured by BASF Corporation) is used as the ultraviolet curable resin. For example, when an ultraviolet curable resin is used, the filler is dispersed in an ultraviolet curable resin, and the resin composition is applied to a resin substrate film to be irradiated with ultraviolet rays, whereby a resin (also referred to as a hard film) can be formed. An anti-glare layer in which a filler is dispersed in the resin). 19 320894 200937045 In addition, when the anti-glare layer having a fine uneven shape is formed by the imprint method, as disclosed in the above-mentioned Patent Document 3, the mold shape is transferred to the resin base by using a mold having fine irregularities. The film can be. Preferably, the mold shape is transferred to the film by embossing, and in the case of embossing, UV imprinting using an ultraviolet curable resin is preferred. Further, when the mold having the fine uneven shape described in Patent Document 3 is produced, the period of the fine unevenness can be enlarged by increasing the size of the fine particles sprayed onto the surface of the mold and increasing the thickness of the electroless Ni plating. 9

In the UV imprint method, an ultraviolet curable resin layer is formed on the surface of polyethylene terephthalate (resin base film), and the ultraviolet curable resin layer is pressed tightly on the uneven surface of the mold. The hard surface of the mold is transferred to the ultraviolet curable resin layer while being hardened. Specifically, the ultraviolet curable resin is applied onto the resin substrate film, and the applied external curable resin is in close contact with the uneven surface of the mold, and (4) the lipid substrate side is irradiated with ultraviolet rays to cause ultraviolet curable resin. After hardening, the polyethylene terephthalate film formed with the cured strand curable resin layer is peeled off from the mold. Thus, the shape of the mold is transferred to the ultraviolet curable resin. The type of UV-curable touch is particularly critical. Further, a visible light curable resin which is cured by using visible light of a wavelength (four) outside line may be used instead of the ultraviolet curable resin by appropriately selecting the photoinitiator. In the case of using UV imprinting to form an anti-glare layer, it is also to impart internal haze to disperse the filler (also known as hard riding) for the purpose of giving internal haze '巍The resin-different resin 320894 20 200937045 may be selected from the above resin particles. The lipid particles are preferably contained in the anti-glare layer in a range of from i part by weight to 4 parts by weight based on 100 parts by weight of the translucent resin. When the weight average particle counts 2 hearts, the wide-angle scattering of light transmission increases, and the anti-glare film becomes whiter overall and tends to decrease. 'When the weight average particle diameter exceeds 10&quot;, the necessary internal scattering tendency is also obtained. . In addition, when the tree ^ has ',,,,, ❹ less than 丨 by weight, there may be no sufficient inner: scattering: amount: when the amount of the resin particles added exceeds 40 parts by weight, it is large, and as a result, There is a tendency to draw the image display device and reduce the visibility. Darkening The thickness of the antiglare layer formed by the UV lithography method is preferably 2 to 20 Å. ς 贿 贿 ς = = = = = = = = = = = = = = = = = = = = = = = = tendency. The shrinkage is caused by the fact that the full haze of the anti-glare of the present invention is composed of haze, and the surface haze is preferably from 5% to the surface haze and preferably from 5% to the inside. Here, the surface haze of the anti-glare film was measured by the following method. That is, first, after forming a glare layer on the inner haze system (preferably an extension product thereof), the side surface of the formic acid cup is a joint surface to form an anti-glare layer. The agent is applied and the haze is measured in accordance with JIS Κ 7136. To:: The transparent haze is equivalent to the full haze of the anti-glare film (10). Next, the cellulose diacetate film having a haze of 320,894, 2009,370,45 degrees was attached to the surface of the fine concavo-convex surface of the antiglare layer by glycerin, and the haze was measured again in accordance with JIS K 7136. In the haze, the surface haze due to the fine unevenness is largely canceled by the cellulose triacetate film adhered to the surface unevenness, and thus can be regarded as the "internal haze" of the antiglare film. Therefore, the "surface haze" of the anti-glare film is obtained by the following formula (5). Surface haze = full haze - internal haze... (5) From the viewpoint of suppressing whitening, the surface haze of the anti-glare film is set to 15% or less, and it is preferably 5% to more effectively suppress whitening. Or below. However, if it is less than 0.5%, it will not show sufficient anti-glare properties, so it is not suitable. In addition, when the internal dew of the anti-glare film exceeds 40%', when the image display device is used, the screen becomes darker and the visibility is lowered. Further, when the internal haze is less than 5%, the arrangement of the high-quality image display device causes the distribution of the brightness (flicker) due to the interference of the pixels and the surface unevenness. A better range of internal haze is 10% to 20%. Further, the anti-glare film 'of the present invention has an incident angle 30 from the side of the anti-glare layer. When the light is incident, the reflectance R (30) having a reflection angle of 30 is preferably 〇 〇 5% to 2%, and the reflection angle is 40. The reflectance R (40) is preferably 〇. (10) ❹ ^ to 〇〇 5%, and the reflection angle is 50. The reflectance R (50) is preferably 〇, 〇〇〇〇 1% to 〇 〇〇〇 5%. By setting the reflectance r (3 〇), the reflectance r (4 〇), and the reflectance R (5 〇) in the above-mentioned target circumference, it is possible to provide an anti-glare that exhibits both excellent anti-glare properties and more effectively inhibits whitening. membrane. ^匕', for the incident angle from the anti-glare layer side, the upper "mother I" is reflected when the light is incident. The third item stores the reflectance 22 320894 200937045 when the anti-glare film is from the anti-glare A perspective view of the incident direction and the reflection direction of the light on the layer side. Referring to Fig. 3, the light 505 incident on the anti-glare layer side of the anti-glare film 501 from the normal line 502 at an angle of 30° is reflected opposite to the angle. The reflectance (i.e., the regular reflectance) of the reflected light in the direction of 30° (i.e., the regular reflection direction 506) is set to R (30). Further, 0 = 0 of the light 507 reflected at an arbitrary reflection angle 0 The reflectance of the reflected light of 40° and the reflectance of the reflected light of Θ=50° are respectively R (40) and RC50). In addition, the direction of the reflected light when measuring the reflectance (positive reflection direction 506 and reflection) The direction of reflection of the pupil 507 reflected by the corners is set in the plane containing the incident light 505 and the plane of the normal 502. If the regular reflectance R (30) exceeds 2%, sufficient anti-glare function cannot be obtained. There is a tendency to reduce the visibility. On the other hand, if the positive reflectance R(30) is too small, there will be a tendency to appear whitening. Therefore, it is preferably 0.05% or more. The positive reflectance R(30) is preferably 1.5% or less, especially 〇. 7% or less, and the positive reflectance R(30) is 〇. 1% or more, especially in the case of ^ 3% or more. In addition, if R (40) exceeds 〇 005% or R (5 〇) exceeds 0.00 000%, an anti-glare film may occur. Whitening, the tendency to reduce the visibility. That is, for example, even in the case where the anti-glare is placed on the front side of the display device to display black on the display surface, the light from the surroundings is picked up and occurs. The whitening tendency of whitening the entire display surface. Therefore, R(40) and R(50) are preferably set so as not to be too large. On the other hand, the reflectance of these angles is too small to be sufficient. R(40) is generally preferably 0.0001% or more, and R(50) is generally preferably 0.0001% or more. R(40) is more preferably 〇. .0005% to 〇. 002%, 23 320894 200937045 R(50)^&gt;ii4 0.〇〇〇〇5〇/〇jl 〇〇〇〇!%〇 Figure 4 depicts the anti-glare film of the present invention ( Anti-glare film 501) of Figure 3 An example of a graph showing the relationship between the reflection angle 0 of the S 507 reflected by the reflection angle 61 and the reflectance (the reflectance capture logarithm scale) of the light 505 incident from the normal line 502 at an angle of 3 G. The graph of the relationship between the reflection angle and the reflectance or the reflectance of each reflection angle read from the graph is also called a reflection characteristic profile. As shown in the graph, the regular reflectance R (30) is Relative to 3〇. The peak value of the reflectance of the incident light 5 〇 5 'the reflectance tends to decrease as the angle deviates from the direction of the regular reflection. In the example of the reflection characteristic distribution shown in Fig. 4, the regular reflectance R (30) is about 〇. 1% 'R(40) is about 0. 004%, and R(50) is about 0. 0005%. . When measuring the reflectance of anti-glare, it is necessary to accurately measure the reflectance of 0.001% or less. Therefore, measurement can be performed efficiently using a wide dynamic range of detectors. For such a detector, for example, a commercially available optical power meter can be used, and an aperture is provided in front of the detector of the optical power meter, and an angle at which the antiglare film is calculated is set to 2. The variable angle photometer can be used for measurement. For incident light, visible light of 38〇 to 78〇nm can be used. For the light source for measurement, light emitted from a light source such as a halogen lamp can be used for collimation. The winner can also use a monochromatic light source such as a laser and the parallelism is south. When the anti-glare film is smooth and transparent on the back surface, since the reflection from the back surface of the anti-glare film affects the measured value, it is preferable. For example, the smooth surface of the anti-glare film can be optically adhered to the black acrylic resin sheet by using a liquid such as an adhesive or water or glycerin, whereby only the reflectance of the outermost surface of the anti-glare film can be measured. The reflectance R (30), the reflectance 24 320894 200937045 R (40), and the reflectance R (50) prescribed in the above-mentioned "The present invention are measured by the following methods. The antiglare layer surface (the surface having fine irregularities) of the antiglare film is inclined by 3 相对 from the normal line 5〇2. The direction illuminates the parallel light emitted by the He-Ne laser to measure the angle of the reflectance in the plane 509 containing the normal line 5 〇 2 ♦ and the incident light 505. For each measurement of reflectivity, "3292 03 Optical Power Sensor" and "3292 Optical Power Meter" manufactured by Yokogawa Electric Co., Ltd. &quot;Low Reflection Film> The anti-glare film of the present invention is also used. It may have a low reflection film on its outermost surface (i.e., on the surface of the fine ridged surface of the antiglare layer). Although a sufficient anti-glare function can be exhibited even in the absence of a low-reflection film, the anti-glare film property can be further improved by providing a low-reflection film on the outermost surface. The low-reflection film is formed by layering a lower refractive index material having a lower refractive index than the anti-glare layer on the anti-glare layer. Specific examples of such a low refractive index material include inorganic substances such as lithium fluoride (LiF), magnesium fluoride (MgF2), aluminum fluoride (aif3), and cryolite (3NaF · AIF3 or NasAlFe). The fine particles of the material include an inorganic low-reflection material such as a propionic acid-based resin or a fluorene-based epoxy resin; an organic low-reflection material such as a fluorine-based or lanthanide-based organic compound, a thermoplastic resin, a thermosetting resin, or an ultraviolet curable resin; material. The thickness of the low film and the film is 〇. 01#^ to 0. 2/zm, preferably 0. 08# m to 0. 12 // m. <Anti-glare polarizing plate> The anti-glare film of the present invention has high anti-glare performance and excellent visibility, and can also reinforce the strength of the panel to prevent warpage of the panel, and thus is attached to the image. When the display device is used, it can be excellent in visibility and mechanical strength of 320894 25 200937045. When the portrait shows the pen film applied to the polarizing plate. When printing or crystal display, the anti-glare can be absorbing the iodine or dichroic dye 5, and the polarizing plate is mostly in the

The polarizing film composed of at least one surface of the optical film and the polyvinyl alcohol-based resin film is formed to constitute a film-formed film of the present invention, and the anti-glare film of the present invention is formed with an anti-glare layer. The anti-glare polarizing plate can be formed by bonding the polarizing film to the other surface of the polarizing film so that the polarizing film is disposed on the surface opposite to the anti-glare film of the present invention. At this time, the overlap has a different state of reliance or optical film, and the layer (ceU) can be attached. : the partner capable of forming a polarizing plate for bonding to a liquid crystal cell with a protective film is attached to at least one side of the polarizing film and forming a surface of the anti-glare layer, and is bonded to at least one side. After the glare polarizing film in the polarizing plate is protected, the anti-glare layer is formed by bonding the ray to the film of the lysate, and the anti-glare polarizing plate can be formed.

As described above, in the anti-glare polarizing plate of the present invention, the polarizing film is disposed on the surface of the anti-glare film opposite to the surface on which the anti-glare layer is formed, and the polarizing film and the anti-glare film are directly bonded to each other. The aspect of the bonding, and the second aspect includes the fact that the polarizing film and the anti-glare film are laminated to each other by another film. <Image display device> The image display device of the present invention includes the antiglare film of the present invention or the above-described antiglare polarizing plate and image display device. Here, the image display element includes a liquid crystal cell in which liquid crystal is sealed between the upper and lower substrates, and the image display state is changed by applying a voltage of 320894 26 200937045 to change the alignment state of the liquid crystal, but the image display system is representative. Further, the anti-glare film of the present invention or the above-described "glare polarizing light" can also be applied to various known displays such as an electro-concentration display panel and a control device. In the drawing ":::" of the present invention, the anti-glare film or the anti-glare polarizing plate is disposed closer to the viewing side than the image display element on the side of the anti-glare layer side. In this case, the anti-glare film (the side of the anti-glare layer) is formed on the outer side (the side of the anti-glare layer), and the anti-glare film can be directly attached to the surface of the image display element, and In the case of the image display means, for example, the plate can be bonded to the surface of the liquid crystal panel via a film. In this way, the image display device of the summer anti-glare film is provided by the anti-glare film; the incident light bulk material can reflect the portrait fade, and * provides excellent visibility. Further, when the anti-glare film of the present invention is applied to an image display device, the conventional anti-glare film is used to reinforce the strongness of the panel, and the warpage of the ratio is two. In addition, it has not been observed that the phase difference due to the delay is observed from the oblique direction. [Embodiment] The following shows that the embodiment is not limited by the embodiments. In the present invention, the "%" and "parts" of the usage amount of the present invention, unless otherwise specified, indicate the content and the evaluation of the anti-glare of the following examples represents the weight basis. (1) The fresh amount of the anti-glare film is as follows. (1-1) Haze 320894 27 200937045 The full haze of the anti-glare film is measured by the following method, that is, the optical transparent __ ' is used to prevent the surface from being formed on the opposite side to the surface on which the anti-glare layer is formed. For the anti-glare film to be bonded to the glass substrate, the measurement was carried out by using a haze meter "HM-Talk" manufactured by Murakami Color Research Laboratory Co., Ltd. (Jobs. Co., Ltd.). Further, the internal haze was obtained by the following method, and (4) The cellulose triacetate film having a haze of substantially Q was bonded to the uneven surface of the antiglare layer, and measured again in accordance with JIS K7136. The surface haze is calculated based on the above formula (5).

(1-2) Penetration sharpness The penetration sharpness of the anti-glare film was measured using a sharp measurement metric "IGM_1Dp" manufactured by SUGA Test Machine Co., Ltd. of JIS K 7105. The sample was traced and the optically transparent adhesive was applied to the glass plate in such a manner that the fine uneven surface of the glare layer became a surface and then measured. In this state, the light is incident from the glass side, and the measurement is performed. The measured values are the widths of the dark portion and the bright portion, respectively.

▲ 〇· 5mm, 1· 〇 及 and 2. 四种 的 的 的 的 2 2 2 2 2 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种 四种The maximum value of the penetration sharpness at this time is lion%. (Bu 3) The reflection characteristic distribution &quot;^ is inclined at 30 in the film normal. In the direction of the anti-glare layer of the anti-glare film, and the reflectance in the plane of the 'line' irradiation direction (the direction of the incident light), the measurement of the L-perimeter is used in Yokogawa. "3292 03 Optical Power Sensor" and "3292 Optical Power Meter" manufactured by Limited Corporation. 28 320894 200937045 (2) Evaluation of anti-glare performance of anti-glare film (2-1) Evaluation of whitening In order to prevent reflection from the back surface of the anti-glare film (the surface opposite to the fine concavo-convex shape of the anti-glare layer) The anti-glare film is bonded to the black acrylic resin sheet so that the fine uneven surface of the anti-glare layer becomes the surface, and is visually observed from the fine uneven surface side of the anti-glare layer in the bright room in which the fluorescent lamp is lit. Observe and visually evaluate the degree of whitening. The degree of whitening was evaluated in three stages of 1 to 3 according to the following criteria (the evaluation was based on the average of the three observers). 1: No whitening was observed. 2: Some whitening was observed. 3: Clearly observed whitening. (2-2) Evaluation of color unevenness The color unevenness was evaluated by the following procedure. First, a commercially available liquid crystal TV ("LC-32GH3" manufactured by SHARP Co., Ltd.) peels off the polarizing plate on the back side and the display surface side, and replaces the original polarizing plates to hold Q You Chemical ( The polarizing plate "SUMIKALAN SRD341E" manufactured by KK Co., Ltd. is laminated with the adhesive film to the back side by the adhesive shaft so that the absorption axis coincides with the absorption axis of the original polarizing plate. TAC film "FUJITAC", polyvinyl alcohol-based polarizer (polarizing film composed of polyethyl propylene glycol containing iodine as a dichroic dye) and anti-glare with various full haze H% and penetration sharpness Tc% The polarizing plate made of a film is bonded to the display surface side by an adhesive so that the absorption axis coincides with the absorption axis of the original polarizing plate. Then, the liquid crystal television obtained in the above manner was turned on in the dark room, and evaluated by visually observing the color unevenness 29 320894 200937045 from the front direction and the oblique direction. The degree of color unevenness was evaluated by 5 stages of 1 to 5 according to the following criteria (the evaluation was performed on the average of 3 observers). * 1: Color unevenness was not observed at all. 2: Almost no color unevenness was observed. 3: A slight unevenness in color is observed. 4: Clearly observed uneven color. 5: Observed severe color unevenness. 1) <Example 1> (A) Preparation of polarizing film A polyvinyl alcohol film having an average polymerization degree of about 2400, a degree of saponification of 99.9 mol% or more and a thickness of 75/zm was impregnated to 3 〇t: pure water. Thereafter, the mass ratio of 〇 iodine/calcium iodide/water was immersed to 3 〇&lt;t to 水溶液2/2/1 〇〇 of the aqueous solution. Thereafter, it was immersed at 56.5 ° C to calcium iodide/boric acid. / Water mass ratio of 12 / 5 / 1 水溶液 aqueous solution. Then, after washing with pure water of 8 ° C, to 65. (: drying, made of polyvinyl alcohol adsorption alignment with iodine polarized light The film is formed in the step of iodine dyeing and boric acid treatment, and the total stretching ratio is 5.3 times. (B) Preparation of anti-glare film The following components are dissolved in ethyl acetate at a solid content concentration of 60%. UV curable resin composition. 〇 pentaerythritol triacrylate 60 parts of polyfunctional amine esterified acrylate 40 parts (reactive organism of hexamethylene diisocyanate and pentaerythritol triacrylate) Next, relative to the ultraviolet curable resin composition The amount of the solid I is 100 parts, and the porous silica dioxide granules having a weight average particle diameter of 2. 7 / zm is added. 3 parts of SYLYSIA (trade name / Fuji Silysia Chemical Co., Ltd.), and added "LUCIRIN ΤΡΟ" which is a photopolymerization initiator (BASF company / chemical name: 2, 4, 6-three The coating liquid was prepared by adding 3 parts of 2,4,6-trimethylbenzoyldiphenylphosphine oxide. The coating liquid was applied so that the coating thickness after drying became 3/m. The cloth was dried on a one-axis stretch polyethylene terephthalate film (thickness, and dried in a dryer set at 80 ° C for 1 minute. From the side of the ultraviolet curable resin composition layer of the dried film, The light emitted from the high-pressure mercury lamp having a strength of 20 mW/cm 2 was irradiated so that the light amount of the h-line converted light was 30 〇mJ/cm 2 , and the ultraviolet curable resin composition layer was cured to obtain an anti-glare layer having fine irregularities on the surface ( The hardening resin is one of the shaft-extending polyethylene terephthalate film. The thickness of the anti-glare layer of the anti-glare film obtained as described above is measured, and the thickness is measured to be 27%. Thickness amount of the anti-glare layer of the present invention The highest part among the fine concavo-convex convex portions. The outer surface of the anti-glare layer shows the arithmetic mean averaging Pa and the maximum cross-sectional height pt of the fine concavo-convex shape. (c) Anti-glare polarizing plate The anti-glare film of the present invention (4) prepared by the above-mentioned anti-glare film is prepared by laminating the surface opposite to the side of the single-sided surface, and the above-mentioned prepared yin 2 = first thick is bonded by saponification _ saponification _ The axis-axial extension of the glare film is orthogonal to the axis of extension of the polarizing film: the film is provided with a layer of an adhesive (2) on the surface of the cellulose diacetate film of the first plate. 320894 31 200937045 (D) Production of liquid crystal panel and liquid crystal display device - Commercially available LCD TV (manufactured by SHARP Co., Ltd.) from a liquid crystal display device (ie, a display-display device) equipped with a vertical alignment mode Liquid crystal cell peeling polarizing plate of Lc 32Gfi3") The polarizing plate "SUMIKALAN SRD341E" manufactured by Sumitomo Chemical Co., Ltd. is absorbed by the polarizing plate and is aligned with the absorption axis of the polarizing plate originally attached to the liquid crystal television. The method is applied to the back surface (backlight side) side of the liquid crystal cell by an adhesive, and the anti-glare polarizing plate has the absorption axis of the polarizing plate and the absorption axis direction of the polarizing plate originally attached to the liquid crystal television. A liquid crystal panel was fabricated by bonding an adhesive to the front side (viewing side) of the liquid crystal cell®. Then, the liquid crystal panel is assembled by a backlight/light diffusing plate/liquid crystal panel, and a liquid crystal display device (that is, an image display device) is produced. The liquid crystal display device has color unevenness when viewed from an oblique direction ( Uneven interference is small. In addition, the light curve of the LCD panel is also small. Table 2 shows the results of other optical characteristics evaluation. Further, the details of the penetration sharpness of the antiglare film of Example 1 shown in Table 2 are as follows. Penetration clarity 0. 125mm Light comb: 12. 5% 0. 5 Leg comb: 9. 4% 1. 0 mm comb: 10. 6% 2. 0 mm comb: 33. 4% Total 65. 9% <Example 2 and Comparative Example 1> 320894 32 200937045 _ In addition to the weight of the filler (porous cerium oxide particles, which is only described as "cerium oxide" in Table 1) dispersed in the coating liquid, The anti-glare film was produced in the same manner as in Example 1 except for the above, and the optical properties were evaluated. The optical property evaluation results are shown in Table 2. <Examples 3 to 5, Comparative Examples 2 and 3> In addition to changing the filler dispersed in the coating liquid to spherical polystyrene particles (refractive index: 1.59) having a weight average particle diameter of 3.Ο/zm in place of the porous second The anti-glare film was prepared and the optical properties were evaluated in the same manner as in Example 1 except that the weight of the cerium oxide particles and the thickness of the anti-glare layer were changed as shown in Table 1. The optical property evaluation results are shown in Table 2. <Comparative Example 4> The evaluation was carried out in the same manner as in Example 1 except that the antiglare layer was not formed on the monoaxially-extending polyethylene terephthalate film. The optical property evaluation results are shown in Table 2. 33 320894 200937045 Table 1 Filler material Weight Average particle diameter Filler weight part measured Anti-glare layer thickness Arithmetic average height of fine concavo-convex shape of anti-glare layer Pa Maximum profile height Pt of fine concavo-convex shape of anti-glare layer Example 1 2. 7/zm 3 parts 2. 7 ren m 0. 25/zm 1. 33/zm Example 2 oxidized dream 2. 7/zm 5 parts ΖΛμ, ν &amp; 0. 30^πι 1. 61 β^Ά Example 3 Polystyrene 3. Oytim 30 parts 4. 2^m 0.17^m 0. 95, Example 4 Polystyrene 3. O^m 25 parts 4. 5/zm 0. 09 仁 m 0. 52Aim Implementation Example 5 Polystyrene 3. O^m 40 parts 4. 3//in 0.13^m 0·72/zm Comparative Example 1 Cerium oxide 2. 7^m 1.5 parts 3. O^m 0. 22/zm 1 09 μια Comparative Example 2 Polystyrene 3. 0/im 5 parts 4. 6/zm 0· 13/zm 0. 81 /zm Comparative Example 3 Polystyrene 3. 〇iim 10 parts 9. 7^m 0.14/ Zm 0. 72/zm Comparative Example 4 — — one—one—one haze brain surface haze internal haze f select sharpness lc% R(30) R(40) R(50) color unevenness evaluation result whitening evaluation Compensation Results Ί 10.7% 9.83⁄4 0.93⁄4 65. 93⁄4 0.103⁄4 0. 00413⁄4 0. 000483⁄4 3 2 Pipe Application 2 ~ 20.1% 19.4% 0.7% 40. 93⁄4 0. 04% 0. 00583⁄4 0.000863⁄4 1 3 Extravagant 3 35.5% 9.63⁄4 26.0% 95. 3% 0.113⁄4 0. 0052% 0.00018% 1 2 Extravagance 4 24.13⁄4 2.0% 22.13⁄4 185.5% 0.15% 0. 00053⁄4 0. 00005% 3 1 f gland 5 43. 5% 2. 6% 40. 9% 180.8% 0.313⁄4 0. 0005% 0.00005% 2 1 it at it 1 3.43⁄4 2.7% 0.7 3⁄4 97.1% 0.57% 0.0011% 0. 00012% 4 1 10.53⁄4 2.93⁄4 7.63⁄4 251.83⁄4 0.32» 0.0010% 0.000063⁄4 4 1 Than the teachings 3 13. 6% 2.33⁄4 11.3% 110. IX 0. 22X 0.00073⁄4 0 00004% 4 1 Comparative Example 4 0.0% 0.0% 0.03⁄4 400. 03⁄4 One-to-one 5 One anti-glare film of the present invention exhibits excellent anti-glare performance while reducing color unevenness' and mechanical strength is also Since the polyethylene terephthalate is extended to be high, it is known that it is an excellent anti-glare film which does not cause color unevenness when it is disposed in an image display device. However, the surface haze, the reflectance R(3〇), 34 320894 200937045 .R(4G) and R(10) do not satisfy the preferred conditions of the present invention, and the haze is whitened, and the internal haze does not satisfy the preferred condition of the present invention. Example 5 When the image display device was placed in the image display device, the screen was darkened as a whole and the contrast was lowered. In Comparative Examples 1 to 4, the mechanical strength was due to the use of the extended polyethylene terephthalate film. However, since the relationship between the full haze (10) and the penetration sharpness (Td〇 does not satisfy the requirements of the present invention, color unevenness is clearly observed when disposed on the image display device. [Industrial use possibility] By disposing the anti-glare film of the present invention in various displays such as a liquid crystal panel, a plasma display panel, a cm display, and an organic EL display with the anti-glare film being closer to the viewing side than the image-forming display element, whitening can be performed. In addition, it is possible to provide a person with excellent visibility by the fact that the image can be faded. In addition, since the mechanical strength is also improved, the warpage of the panel and the like can be effectively suppressed. [Simple description of the drawing] Figure 1 shows A schematic cross-sectional view of a preferred embodiment of the anti-glare film of the present invention (a) shows a case where the anti-glare layer contains a filler, and (b) shows a case where the anti-glare layer does not contain a filler. Fig. 2 shows a full fog of the anti-glare film A graph showing the relationship between the degree η% and the penetration sharpness Tc%. Fig. 3 is a perspective view showing the incident direction and the reflection direction of light from the side of the anti-glare layer when the reflectance is obtained. Fig. 4 is a view showing the present invention A graph showing the relationship between the angle of reflection of reflected light and the reflectance (reflectance is 35 320894 200937045 logarithmic scale) of the anti-glare film opposite to the light incident from the normal at an angle of 30. [Main component symbol description] 101a 101b Polyethylene terephthalate film 102a, 102b Antiglare layer 103a, 103b, 501 Antiglare film 〇104a Filler 502 Normal line 505 Incident light 506 Positive reflection direction 507 Reflected light 509 Plane 36 320894

Claims (1)

200937045, VII. Patent application scope: η 1. An anti-glare film which is formed on the polyethylene terephthalate film to form an anti-glare layer having fine irregularities on the surface; when the anti-glare film is fully haze When •% and the penetration sharpness is Tc%, the following relationship (1) · Tc^8H (1) is satisfied. 2. An anti-glare film is formed on a polyethylene terephthalate film to form an anti-glare layer having fine irregularities on the surface; when the anti-glare film has a full haze of H%, the penetration is sharp When the degree is Tc%, the following relationship (2) is satisfied: ❹ TcS5H...(2). 3. An anti-glare film is formed on a polyethylene terephthalate film to form an anti-glare layer having fine irregularities on the surface; when the anti-glare film has a full haze of H%', the penetration clarity is When Tc%, the following relationship is satisfied. Tc^3H ... (3) . 4. The anti-glare film according to any one of claims 1 to 3, wherein the polyethylene terephthalate film is a monoaxially stretched polyethylene terephthalate film or a biaxially oriented polycondensation film. Ethylene terephthalate film, and its thickness is 20 # m to 1 〇〇# m. 5. The anti-glare film according to any one of claims 1 to 3, wherein the full haze of the anti-glare film is composed of surface haze and internal haze; the surface haze is 0.5%. To 15%, the aforementioned internal haze is 5% to 40%. The anti-glare film according to any one of the above-mentioned claims, wherein the light is incident at an incident angle of 3 从 from the side of the anti-glare layer. At the time of incidence, the angle of reflection is 30. The reflectance R(30) is 〇·05% to 2%; 320894 37 200937045 ι * The reflectance of the reflection angle of 40° R(40) is 0. 0001% to 0. 005%; the reflectance of the reflection angle of 50° R 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 7. The anti-glare film according to any one of claims 1 to 3, wherein the anti-glare layer has a low-reflection film on the surface of the fine concavo-convex shape. ^ 8. An anti-glare polarizing plate which is formed by adhering an anti-glare film and a polarizing film according to any one of claims 1 to 3; wherein the polarizing film is disposed in the anti-glare film and formed The surface of the anti-glare layer is the opposite side. An image display device comprising the anti-glare film of any one of claims 1 to 3 or the anti-glare polarizing plate and the image display element of claim 8; The film or the anti-glare polarizing plate is disposed on the side of the image display element on the side where the anti-glare layer side is outside. 38 320894